Not sure if you have access to any Bell hard copy maintenance manuals, I do recall some black and white pics of the flag track method on L model, possibly B model. Im on vacation till next monday. I have no access to the manuals or the CD's. If no one else helps you, when I get back to work, I will see if I can find you some pictures.
Ive never done it or seen it done, but damn that looks dicey for sure. And I thought I hated using the RADS.